Related Questions

When a pentavalent impurity is added to a pure semiconductor, it becomes
A An insulator
B An intrinsic semiconductor
C p-type semiconductor
D n-type semiconductor
Addition of trivalent impurity to a semiconductor creates many
A Holes
B Free electrons
C Valence electrons
D Bound electrons
A pentavalent impurity has ___________ Valence electrons
A 3
B 5
C 4
D 6
The impurity level in an extrinsic semiconductor is about of pure semiconductor.
A 10 atoms for 108 atoms
B 1 atom for 108 atoms
C 1 atom for 104 atoms
D 1 atom for 100 atoms
As the doping to a pure semiconductor increases, the bulk resistance of the semiconductor ___________
A Remains the same
B Increases
C Decreases
D None of the above
নিম্নের কোনটি p-টাইপ অর্ধপরিবাহীতে n-টাইপ অর্ধপরিবাহীর তুলনায় বেশি আছে? (Which of the following does a p-type semiconductor have more compared to an n-type semiconductor-)  
A মোট ধনাত্মক আধান (total positive charge)
B মোট আধান (total charge)
C ইলেকট্রন ঘনত্ব (density of electrons)
D হোল ঘনত্ব (density of holes)
A computer takes 50 nanoseconds to do an 221 addition. How many addition can it do in 1 second?
A 20 million
B 25 million
C 30 million
D 35 million
Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal?
A Silicon
B Sulphur
C Manganese
D Phosphorus
By increasing impurity content in the metal alloy the residual resistivity always
A Decreases
B Increases
C Remains constant
D Becomes temperature independent
The impurity atoms is semiconductors
A Inject more charge carriers
B Reduce the energy gap
C Increase the kinetic energy of valence electrons
D All of the above

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